0.079 0.3750 Minimum Bore Diameter Micro 100 QRR-079-8X Quick Change Retaining Ring Grooving Tool 2.00 mm 0.500 Shank Diameter Maximum Bore Depth 9.4 mm 2 0.370 Groove Width Solid Carbide Tool Projection 9.5 mm 2.54 mm 0.100 12.7 mm 